import { Options as DetectOverflowOptions } from '../detectOverflow';
import type { Middleware, MiddlewareArguments } from '../types';
export interface Options {
    /**
     * Function that is called to perform style mutations to the floating element
     * to change its size.
     * @default undefined
     */
    apply(args: MiddlewareArguments & {
        availableWidth: number;
        availableHeight: number;
    }): void | Promise<void>;
}
/**
 * Provides data to change the size of the floating element. For instance,
 * prevent it from overflowing its clipping boundary or match the width of the
 * reference element.
 * @see https://floating-ui.com/docs/size
 */
export declare const size: (options?: Partial<Options & DetectOverflowOptions>) => Middleware;